September weather forecastStony Point, MI
September
Weather in September
Ocean temperature
In September, the average ocean temperature in Stony Point, Michigan, is 71.2°F (21.8°C).Note: A surface water temperature of 71.2°F (21.8°C) does not provide an enjoyable swimming experience for most. Breathing control becomes more challenging as the water temperature drops below 69.8°F (21°C).
Daylight
In Stony Point, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:59 am and sunset at 8:06 pm. On the last day of September, sunrise is at 7:29 am and sunset at 7:15 pm EDT.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Stony Point, Michigan, in September, the average water temperature is 71.2°F (21.8°C). Swimming in 71.2°F (21.8°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).
In September, the average day length is 12h and 28min.
On the first day of September in Stony Point, Michigan, sunrise is at 6:59 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 7:15 pm EDT.
Average sea temperature in September
Stony Point, MI
- Average sea temperature in September: 71.2°F
The best month for swimming (with the highest average sea temperature) is August (76.4°F).
The coldest month (with the lowest average sea temperature) is February (32.6°F).
Average daylight in September
Stony Point, MI
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).





